Balík: libperlx-maybe-perl (1.202-1)

[ Zdroj: libperlx-maybe-perl  ]

return a pair only if they are both defined

Moose classes (and some other classes) distinguish between an attribute being unset and the attribute being set to undef. Supplying a constructor arguments like this:

    my $bob = Person->new(
       name => $name,
       age => $age,
       );

Will result in the "name" and "age" attributes possibly being set to undef (if the corresponding $name and $age variables are not defined), which may violate the Person class' type constraints.

PerlX::Maybe checks that $x and $y are both defined. If they are, it returns them both as a list; otherwise it returns the empty list.

This package also includes Syntax::Feature::Maybe.

Značky: Software Development: Perl Development, Knižnice, Implementované v: Perl

Ostatné balíky súvisiace s balíkom libperlx-maybe-perl

• dep: libmodule-manifest-skip-perl

  MANIFEST.SKIP management for Perl modules

• dep: perl

  Practical Extraction and Report Language od Larryho Walla

• rec: libexporter-tiny-perl

  drobný exportér podobný Sub::Exporter

• rec: libperlx-maybe-xs-perl

  XS backend for PerlX::Maybe

• sug: libsyntax-perl

  pragma for activating syntax extensions

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